Alert archive / Illinois / Dense Fog Advisories

Dense Fog Advisories in Illinois, 2008

56 dense fog advisories in 2008. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of dense fog advisories reaches back to 2005.

Dense Fog Advisories by county

Each county as a circle sized by its count in 2008. Tap one for its archive.

Dense Fog Advisories: 56
Busiest month: September8 dense fog advisories
Busiest day: February 4, 20086 dense fog advisories

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Counties	Lasted
Jan 5, 9:29 PM CST	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Kane and 9 more	15 hr
Jan 5, 9:43 PM CST	Dense Fog Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	32 hr
Jan 7, 2:41 PM CST	Dense Fog Advisory	DVN	Carroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more	15 hr
Jan 27, 4:04 AM CST	Dense Fog Advisory	PAH	Alexander, Johnson, Massac, Pulaski, Union	6 hr
Feb 3, 8:50 PM CST	Dense Fog Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	15 hr
Feb 4, 2:33 AM CST	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	33 hr
Feb 4, 2:46 AM CST	Dense Fog Advisory	PAH	Edwards, Franklin, Hamilton, Jackson, Jefferson, Perry and 5 more	7 hr
Feb 4, 6:49 AM CST	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	21 hr
Feb 4, 12:03 PM CST	Dense Fog Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	12 hr
Feb 4, 12:15 PM CST	Dense Fog Advisory	LSX	Adams, Bond, Brown, Fayette, Greene, Macoupin and 3 more	105 min
Mar 2, 6:47 PM CST	Dense Fog Advisory	LOT	Boone, DeKalb, Kane, Lake, Lee, McHenry and 2 more	5 hr
Mar 14, 3:48 AM CDT	Dense Fog Advisory	LSX	Adams, Brown, Pike	7 hr
Mar 14, 4:49 AM CDT	Dense Fog Advisory	ILX	Cass, Christian, DeWitt, Fulton, Logan, McLean and 9 more	4 hr
Mar 18, 6:44 AM CDT	Dense Fog Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	5 hr
Mar 18, 7:34 AM CDT	Dense Fog Advisory	ILX	Cass, DeWitt, Fulton, Knox, Logan, McLean and 11 more	6 hr
Mar 18, 8:44 AM CDT	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	5 hr
Apr 19, 7:03 PM CDT	Dense Fog Advisory	LOT	DuPage, Ford, Grundy, Iroquois, Kane, Kankakee and 3 more	14 hr
Apr 19, 9:30 PM CDT	Dense Fog Advisory	LOT		12 hr
Apr 20, 5:31 AM CDT	Dense Fog Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Putnam, Rock Island and 1 more	5 hr
May 27, 3:20 AM CDT	Dense Fog Advisory	ILX	Clark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more	6 hr
May 27, 4:13 AM CDT	Dense Fog Advisory	PAH	Edwards, Jefferson, Wabash, Wayne	5 hr
Jun 3, 10:53 PM CDT	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Kane, Lake, Lee and 3 more	13 hr
Jun 4, 11:39 PM CDT	Dense Fog Advisory	LOT	Lake, McHenry	4 hr
Jun 14, 4:12 AM CDT	Dense Fog Advisory	LSX	Bond, Calhoun, Greene, Jersey, Macoupin, Madison and 4 more	5 hr
Jun 14, 4:28 AM CDT	Dense Fog Advisory	ILX	Cass, Christian, DeWitt, Logan, McLean, Macon and 10 more	5 hr
Jul 5, 3:11 AM CDT	Dense Fog Advisory	PAH	Franklin, Hamilton, Jackson, Jefferson, Johnson, Perry and 3 more	4 hr
Jul 31, 12:06 AM CDT	Dense Fog Advisory	LSX	Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 2 more	9 hr
Jul 31, 2:19 AM CDT	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more	7 hr
Jul 31, 3:24 AM CDT	Dense Fog Advisory	DVN	Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more	7 hr
Jul 31, 7:21 AM CDT	Dense Fog Advisory	LOT	Ford, Grundy, Iroquois, Kankakee, LaSalle, Lee and 1 more	3 hr
Aug 1, 3:42 AM CDT	Dense Fog Advisory	LSX	Bond, Clinton, Fayette, Macoupin, Madison, Marion and 5 more	4 hr
Aug 1, 4:04 AM CDT	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 19 more	5 hr
Aug 13, 3:44 AM CDT	Dense Fog Advisory	DVN	Rock Island	4 hr
Aug 23, 12:44 AM CDT	Dense Fog Advisory	PAH	Alexander, Franklin, Jackson, Jefferson, Johnson, Perry and 3 more	8 hr
Sep 6, 5:47 AM CDT	Dense Fog Advisory	LSX	Adams	3 hr
Sep 9, 4:00 AM CDT	Dense Fog Advisory	LSX	Adams, Brown, Pike	5 hr
Sep 16, 5:18 AM CDT	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	4 hr
Sep 16, 5:22 AM CDT	Dense Fog Advisory	LOT	Boone, DeKalb, Ford, Grundy, Kendall, LaSalle and 4 more	4 hr
Sep 16, 5:29 AM CDT	Dense Fog Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	4 hr
Sep 21, 7:14 PM CDT	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Kane, Kendall, Lake and 4 more	14 hr
Sep 21, 7:29 PM CDT	Dense Fog Advisory	LOT		14 hr
Sep 26, 5:21 AM CDT	Dense Fog Advisory	LOT	Boone, DeKalb, Grundy, Kane, Kendall, LaSalle and 4 more	4 hr
Oct 18, 3:08 AM CDT	Dense Fog Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	8 hr
Oct 18, 3:29 AM CDT	Dense Fog Advisory	ILX	Fulton, Knox, Marshall, Peoria, Schuyler, Stark	6 hr
Oct 18, 5:17 AM CDT	Dense Fog Advisory	LOT	Lee, Ogle, Winnebago	5 hr
Oct 31, 10:01 PM CDT	Dense Fog Advisory	DVN	Hancock, Henderson, Henry, McDonough, Mercer, Rock Island and 1 more	12 hr
Nov 1, 7:39 AM CDT	Dense Fog Advisory	ILX	Cass, Fulton, Knox, Marshall, Mason, Peoria and 4 more	2 hr
Nov 12, 9:58 PM CST	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Kane, Lake, Lee and 3 more	6 hr
Dec 18, 4:46 PM CST	Dense Fog Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	11 hr
Dec 19, 8:00 AM CST	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 11 more	3 hr
Dec 26, 8:47 AM CST	Dense Fog Advisory	PAH	Alexander, Edwards, Franklin, Hamilton, Jackson, Jefferson and 8 more	5 hr
Dec 26, 11:21 AM CST	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	29 hr
Dec 26, 11:42 AM CST	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	16 hr
Dec 26, 12:03 PM CST	Dense Fog Advisory	LSX	Bond, Clinton, Fayette, Marion, Montgomery, Randolph and 1 more	6 hr
Dec 26, 1:24 PM CST	Dense Fog Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	17 hr
Dec 27, 6:07 AM CST	Dense Fog Advisory	DVN	Carroll, Jo Daviess, Stephenson	3 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

60 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2007 2009

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.